Hose coupling



NVENTOR GEGE H. YE?

A TTOR NE Y March 11 1924".

G.H. DYER HOSE COUPLING Filed March 29. 1920- Patented Mar.. 11,

GEORGE H. DYER, OF SAN' FRANCISCO, CALIFORNIA..

HOSE COUPLNG.

Application iled March 29, 1.920. Serial io. 369,578.

To all whom t may concern:

Be it known that l, GEORGE H. DYER, a citizen of the United States, residing at city and county of San Francisco, and State of California, have invented a new and useful 1m rovement in Hose Couplings, of which t e following is a specification.

This invention relates to a hose coupling.

It is the principal object of the present 1o invention to provide a hose coupling ofsimple construction which may be readily applied to a hose and which will clamp the ose in a manner to prevent leakage even though excessive high fluid pressures are 15 established therethrough.

The invention contemplates the use of a resilient clamping member, a tubular core around which the hose is clamped by said member and a threaded frustoconical sleeve a actuating said clam4 ing member.

The invention is i lustrated by way of example in the accompanying drawings, in which:

Fig. l is a view in central vertical section through a section of hose and the coupling with which the present invention is concerned.

Fig. 2 is a view in transverse section through the coupling as seen on the line so 2 2 orn Fig. 1.

Fig. 3 is a view of the clamping element as disassociated from the remaining parts of the device.

1n the drawings, 10 indicates a length of t5 hose. This hose may be of any desired construction and may be designed for the purpose of conveying liquids or high pressure uids, such as compressed air. Mounted over the end of the hose is a coupling 11 with which the present invention is concerned. This coupling comprises a central, tubular core 12 formed with circumferentially extending corrugations and being further con'- structed so that it gradually tapers toward its openedend. rihis core is formed integral with a hollow nut portion 13 which is in turn formed integral with a tubular sleeve 14 by which thecore may be ldetachably secured to a desired-connection. A V-shaped circumferentially extending corrugation 15 is formed around the enlarged body of the core at a point near the nut 13. As seen in Fig. 2 the bottom walls of this corrugation define a square and thus provide four V-shaped grooves combining to extent around the complete circumference of the core. This channel receives an assembly washer 16, the washer having a main disk portion and a central opening 17 therethrough. Angular tangs 18 project from the margin of the opening 17 and register with the various V-shaped grooves as generally indicated at 15.

1t will be noted that due to the arrangement of the flared tangs of the washer, the ends of these portions are directly abutted against one of the straight faces of the V- shaped corrugations and will thus be held agalnst longitudinal or circumferential movement. r1`he disk portion of the washer 16 rests against an annular ange 19 of the clamping element 20. This element is more clearly shown in F ig. 3 of the drawings where it will be seen to be formed of thin metal and to possess a plurality of corrugated clamping iingers 21. The ends of these ngers are rolled to facilitate in the operation of inserting the hose wall between the lingers and over the tapered core. This roll portion also provides a bearing surface in combination with corrugations 22 and 23 whereby a {ruste-conical clamping sleeve 24 may force the fingers downwardly and bind the wall of the hose onto the core. The base orticn of the sleeve 24 is internally threa ed to receive the cylindrical part 25 of an abutment disk 26. This disk has a central opening through which the core extends and furthermore bears directly against the shoulder provided by the enlarged nut section 13. Due to the fact that the disk 26 is immovable the washer 16 will securely clamp the portion 19 of the clamping element 2O in rigid position with the grooves 15 of the core. Attention is directed to the act that in the present instance the large circumerence of the clamping element at its base is considerably greater in diameter than that of a hose which might be mounted over a core of the dimension employed. 1n this manner the three fullnesses of the device will not be limited. With this idea in view the truste-conical sleeve '24 is also termed with an enlarged openprising a ing through which the hose extends. lft is therefore possible to adapt the present invention to oversize hose when desired.

ln the operation of the present device, the frusto-conic'al sleeve 24c is preferably removed and the hose passed therethrough'. The end of thev hose is then mounted on the coup-ling with the tapered core inserted within vthe passageway through the hose. This will necessitate that the spring ngers 2l of the clamping element 2O shall be expanded to accommodate the hose wall, after which the enlarged portion of the sleeve 24 is screwed onto the portion 25 of the fixed disk 26 and as tightened will cause the annular tapered face of the sleeve to encounter the roller ends of the fingers and the corrugations 22 of each of the fingers. rlhis action will force the fingers onto the hose and in fact' will distort the walls of the hose in a manner to .press portions of the wall into the circumferential corrugations 27 formed around the core. lt is to be noted that the undulations in the fingers and the corrugations around the tapered portion of the core substantially agree, so that inward pressure upon the outer circumference of the hose wall will produce an outward pressure upon the inner circumference at the points of the corrugations and thus moresecurely bind the hose in position. lt will thus be seen that the hose connection here disclosed is simple and inexpensive in construction, being formed of few parts not liable to become broken and capable of actuation in a manner to positively grip a hose andhold it to prevent displacement -or leakage.v

While I have shown the preferred form of my invention, it will be understood that various changes in the construction, combination and arrangement of parts ma be made by those skilled in the art, wit out departing from the spirit of the invention as disclosed.

` Having thus described my invention, what on the core member, a clamp member adapt ed to embrace the end of the hose and'complurality of circumferentially corrugated yieldable fingers, means for securing the disc member and the clamp meinber to the core member and a frusto-conical clamping sleeve adapted to be screwedl onto the disc and'to draw against the yieldable fingers in a manner to produce a clamping action between the fingers and the tapered ortion of the core against the wall of a bse interposed between the core member and the yieldable fingers.

inserer 2. A hose coupling comprising a central tubular member adapted to .be inserted in the endl of a hose, said member havin a plurality of circumferentially exten ing recesses formed in the outer surface thereof, a contractible clamping member adapted to embrace the end ofthe hose,'said clamping n member being circumferentially corrugated, the internal corrugations on said clamping member being disposed in radial alignment with said circumferential recesses in the tubular member when the device is assembled, and means for contracting said clamp- 4. A hose coupling comprising a tubular I core threaded at one end and formed with an externally tapered portion at its opposite end, circumferential corrugations formed around said tapered portion, a shoulder formed on the core, a threaded disk adapted to rest thereagainst, a clamping element formed with ai' plurality llili yieldable fingers and arranged Jin circumscribing relation to the tapered portion of the core, said fingers having corrugations substantially a eeing 'in location with the corrugations o the core, means for fixing the base of said clampin element relative to the threaded disk an a frusto-conical clamping sleeve adapted to be screwed onto the disk and to draw against the yieldable fingers in a manner to produce a clampin action between said fingers andthe tapered portion of the core and a ainst the wall of a hose inserted over sai core-and embraced by said fingers.

, 5. A hose cou g comprising a core member havin a tapered hose entering extension formedg at one end, said tapered portion havin annular grooves formed therein, an enlarge portion formed at the opposite end of the coremember thereby providing a shoulder between the tapered and the enlarged portions, an externally threaded vdisc mounted on the core iand'abutting against the shoulder, a clamping member comprisinge body ortion and a plurality of circumferential y therefrom, a V-shaped groove in the core member, a washer ha 7 t t ularly :c

corrugated ngersextending izo Leeeeei ing tangs extending Within said groove and bose interposed between the core member and il@ securing the body portion of the clamp memthe yieldable ngers.,

ber and the dise member against the shoul- In testimony whereof, have hereunto set der on the core member, a fuiste-conical my hand in the presence of subscribing Witsleve memberhinteriorly dilptd at doge ness.

en to engaget e exterioro t e isc an e screwed thereon and thereby engage the GERGE H DYER' yieldable fingers for forcing the same in- Witness: wardly end thereby clamp the Wall of the W. i Mrz-1' 

